residue

The flies leave a sticky residue on crops..苍蝇在庄稼上留下黏糊糊的分泌物。

Rinse off any soap residue..冲净残留的肥皂。

pesticide residue,[药]农药残留（量）

oil residue,油渣，油残留物；残油

carbon residue,焦炭残渣；炭渣

filter residue,[化]滤渣

amount of residue,残留量

amino acid residue,氨基酸残基

quadratic residue,二次剩余

solid residue,固体残渣